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It is well known that mutation is the ultimate source of variation. Without adequate variation, plant breeding is impossible. To start a breeding program, the breeder must find the appropriate genotype (containing the desired genes) from existing variation, or create the variation if it is not found in nature. Mutagenesis is the process by which new alleles are created. The purpose of this chapter is to discuss mutagenesis as both a technique and a breeding method. The newly created mutants may be used as parents in future breeding programs, in which case mutagenesis is a breeding technique as a source of variation. However, an induced mutant can be systematically processed through conventional breeding steps to be released as a cultivar, hence making it a breeding method (mutation breeding). Mutations arise spontaneously in nature and are pivotal in natural evolution.
Subject:
Agriculture, Genetics
Level:
High School
Grades:
Grade 9, Grade 10, Grade 11, Grade 12
Material Type:
Assessment
Author:
Date Added:
08/28/2019
License:
Creative Commons Attribution Non-Commercial No Derivatives
Language:
English
Media Format:
Text/HTML

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